Template:Did you know


 * ...that the player characters of the Cooperative Testing Initiative were originally Chell and a second woman named Mel?
 * ...that the hoop that dropped from the sky in the end of Portal was intended to be a meme by the developers, instead of the cake or the Companion Cube?
 * ...that Portal 2's main character was originally going to be a man?
 * ...that Portal 2 originally wasn't going to have portals?
 * ...that GLaDOS was intended to speak the voice lines of the Announcer in the first chapter of Portal 2?

Current DYKs

 * ...that the player characters of the Cooperative Testing Initiative were originally Chell and a second woman named Mel?
 * ...that the hoop that dropped from the sky in the end of Portal was intended to be a meme by the developers, instead of the cake or the Companion Cube?
 * ...that Portal 2's main character was originally going to be a man?
 * ...that Portal 2 originally wasn't going to have portals?
 * ...that Portal 2 takes place several years later after the events of Portal said from the words of a Valve employee?
 * ...that GLaDOS was intended to speak the voice lines of the Announcer in the first chapter of Portal 2?
 * ...that the cake is a Black Forest cake?
 * ...that there were plans for a "sticky gel" in Portal 2?
 * ...that Ellen McLain is an opera singer, and sang the Turret Opera?